package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;

@Service
@Slf4j
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        password = DigestUtils.md5DigestAsHex(password.getBytes());
        log.info("密码：{}", password);

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 添加员工
     */
    public void save(Employee employee) {
        BeanUtils.copyProperties(employee, employeeMapper);
        employee.setStatus(StatusConstant.ENABLE);
        employee.setPassword(PasswordConstant.DEFAULT_PASSWORD);
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        employee.setCreateUser(BaseContext.getCurrentId());
        employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.save(employee);
    }

    /***
     *员工分页查询
     */
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO){
        //开启分页

        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        //PageHelper，一个第三方的插件，用来进行分页操作


        //执行分页

        Page<Employee> page= employeeMapper.pageQuery(employeePageQueryDTO);
        //<Employee>这个叫泛型,起到了限制性的作用

        //将查询的结果封装到Emplee中

        return new PageResult(page.getTotal(),page.getResult());//返回页数跟每页展示的条数
    }


    /***
     * 启用禁用员工账号
     */
    public void StartOrStop(Integer status,Long id){
//        Employee employee = new Employee();
//        employee.setId(id);
//        employee.setStatus(status);
        Employee employee=Employee.builder()
                .id(id)
                .status(status)
                .build();
        employeeMapper.update(employee);
    }

    /***
     * 根据id查询员工
     * @param id
     * @return
     */
    public Employee getByid(Long id){
        Employee employee=employeeMapper.getByid(id);
        employee.setPassword("****");
        employeeMapper.getByid(id);
        return employee;//把查找到的数据，以对象的形式返回给controller

    }

    /***
     * 编辑员工信息
     * @param employeeDTO
     */
    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee=new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);

    }

}
